X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Ftypes%2FType.lhs;h=a5ff5ad625390521d30e95b42f7a0465092a49c3;hb=fd7c5f3251794224e1d48d09eeffe18fd76420a2;hp=37f915be1dfca92944994916e3bc02fe5a1d3fae;hpb=ff8e1d01524b48e028b09e2b04b2e5303cb6d95f;p=ghc-hetmet.git

diff --git a/compiler/types/Type.lhs b/compiler/types/Type.lhs
index 37f915b..a5ff5ad 100644
--- a/compiler/types/Type.lhs
+++ b/compiler/types/Type.lhs
@@ -57,7 +57,7 @@ module Type (
 	predTypeRep, mkPredTy, mkPredTys, pprSourceTyCon, mkFamilyTyConApp,
 
 	-- Newtypes
-	splitRecNewType_maybe, newTyConInstRhs,
+	newTyConInstRhs,
 
 	-- Lifting and boxity
 	isUnLiftedType, isUnboxedTupleType, isAlgType, isPrimitiveType,
@@ -122,6 +122,7 @@ import Util
 import Outputable
 import UniqSet
 
+import Data.List
 import Data.Maybe	( isJust )
 \end{code}
 
@@ -631,31 +632,6 @@ pprSourceTyCon tycon
 
 %************************************************************************
 %*									*
-		NewTypes
-%*									*
-%************************************************************************
-
-\begin{code}
-splitRecNewType_maybe :: Type -> Maybe Type
--- Sometimes we want to look through a recursive newtype, and that's what happens here
--- It only strips *one layer* off, so the caller will usually call itself recursively
--- Only applied to types of kind *, hence the newtype is always saturated
-splitRecNewType_maybe ty | Just ty' <- coreView ty = splitRecNewType_maybe ty'
-splitRecNewType_maybe (TyConApp tc tys)
-  | isClosedNewTyCon tc
-  = ASSERT( tys `lengthIs` tyConArity tc )	-- splitRecNewType_maybe only be applied 
-						-- 	to *types* (of kind *)
-    ASSERT( isRecursiveTyCon tc ) 		-- Guaranteed by coreView
-    case newTyConRhs tc of
-	(tvs, rep_ty) -> ASSERT( length tvs == length tys )
-			 Just (substTyWith tvs tys rep_ty)
-	
-splitRecNewType_maybe other = Nothing
-\end{code}
-
-
-%************************************************************************
-%*									*
 \subsection{Kinds and free variables}
 %*									*
 %************************************************************************